Spring flower and wood dead insecticide selection should be accurate

To prevent the flower from dying in spring, the following measures can be taken:
Effective prevention and control of pests and diseases In the selection of pesticides, we must pay more attention to: prevention and control of scale insects and aphids with 40% omethoate 1000 times liquid or other insecticides ; control of scarabs with black light to trap adults, artificially kill adults or kill Insecticide; control of blight can be rooted in the early stage of the disease with 70% methyl thiophanate WP 1000 times solution.
Appropriate amount of watering: For the general flowering, the principle of watering is to pour through without pouring.
Reasonable fertilization: The principle of fertilization of potted flowers is that the amount of fertilization is less, but the amount of fertilization is more. In order to meet the demand for nutrients in flowers and trees, 0.5% urea liquid fertilizer or 0.25% potassium dihydrogen phosphate liquid fertilizer can be prepared for foliar fertilization. Excessive fertilization or excessive fertilization can cause fat damage.
Timely out of the shed: all the flowers and trees should not be moved out of the shed too early and should be moved out after the weather conditions are stable. In particular, the new upper potted plants should not be moved out of the shed too early to be exposed to sunlight. They should be placed in the shed or in a cool and ventilated place for a period of time (usually after mid-April). Under the sun.
The potting soil is properly formulated: in the preparation process of the potting soil, it is necessary to consider its fertility status and its pH value to see if it conforms to the biological characteristics of the plant. If the pH does not meet the requirements, the new soil should be prepared as soon as possible.